Who invested in Alzheon

4 rounds we have observed, with the 2 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Pharma

Raised 2 months agoValuation: $1.3B, Mar 2026

Funding summaryUpdated 26 Oct 2026

$99Mraised across 4 rounds since 2015, from 4 sources

$3.0MVenture$10MSeries A$6.9MDebt$79MVenture

Latest round: Venture, $79MSept 2026
Step-upi: 11.4×
Investors: 2

See who backed them

The funding story

Each circle is a round, placed by date and sized by amount. The line above is the running total.

201520172019202120232025

$3.0MVenture$10MSeries A$79MVenture

First round: Venture, $3.0M
Biggest round: $79M
Usual gap between rounds: 4 months

The rounds

Sept 2026
Venture$79M1 new
- National Institute on Aging
Source recordedSEC filing: $79M sold
Jul 2015
Debt$6.9M
No investor was named in the report.
From a historical funding recordSEC filing: $6.9M sold, first sale Jul 2015
Apr 2015
Series A$10M1 new
- Ally Bridge Group
From a historical funding recordSEC filing: $7.3M sold, first sale Dec 2014
Jan 2015
Venture$3.0M
No investor was named in the report.
From a historical funding recordSEC filing: $3.0M sold, first sale Dec 2014

Who was in which round

The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.

Venture2015Series A2015Debt2015Venture2026National Institute on Aging

Ally Bridge Group

Everyone who backed them

National Institute on AgingVC firm1round

Ally Bridge GroupPrivate equity1round

Missing a round, or an investor who was in one? Tell us.

Also claim to have backed them

This firm lists Alzheon as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.